International Laser Ranging Service

SLR Global Performance Report Card

April 1, 2010 through March 31, 2011

The performance report card is divided into three tables for readability. Table 1 contains performance parameters based on data volume, on-site processing statistics and operational compliance issues. Table 1 L contains information about Lunar Laser Ranging during the past year. Table 2 contains performance parameters based on various Analysis Centers' rapid orbital analysis results.

Below are the detailed descriptions of each column in Table 1 plots of the columns are linked in this description and in Table 1:

• Column 1 is the station location name.
• Column 2 is the monument marker number.
• Column 3 is the LEO pass total during the past 12 months.
• Column 4 is the LAGEOS pass total during the past 12 months.
• Column 5 is the high satellite pass total during the past 12 months.
• Column 6 is the pass total (i.e., all satellites) during the past 12 months.
• Column 7 is the LEO NP total during the past 12 months.
• Column 8 is the LAGEOS NP total during the past 12 months.
• Column 9 is the high satellite NP total during the past 12 months.
• Column 10 is the NP total (i.e., all satellites) during the past 12 months.
• Column 11 is the total tracking minutes (i.e., all satellites) during the past 12 months. This is computed by the summation of the number of normal points multiplied by its bin size in minutes.
• Column 12 is the average single-shot calibration RMS, in millimeters, during the last quarter.
• Column 13 is the average single-shot Starlette RMS, in millimeters, during the last quarter.
• Column 14 is the average single-shot LAGEOS RMS, in millimeters, during the last quarter.

The first entry in each table is for the performance baseline goal. Note: There are no baseline goals for NP data quantities, single shot RMS's.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total passes.

Table 1

Site Information		Data Volume									Data Quality
Column 1	2	3	4	5	6	7	8	9	10	11	12	13	14
Location	Station Number	LEO pass Tot	LAGEOS pass Tot	High pass Tot	Total passes	LEO NP Total	LAGEOS NP Total	High NP Total	Total NP	Minutes of Data	Cal. RMS	Star RMS	LAG RMS
Baseline		1000	400	100	1500
Yarragadee	7090	11836	2200	2257	16293	221412	25593	18382	265387	204196	5.0	8.1	9.2
Zimmerwald_532	7810	6473	1246	1510	9229	126817	19390	15388	161595	150490	7.0	8.1	10.9
Mount_Stromlo_2	7825	6189	1096	515	7800	69685	11666	2782	84133	60054	3.8	3.3	5.5
Changchun	7237	6564	651	470	7685	72308	5059	2588	79955	44265	6.0	10.9	14.7
Matera_MLRO	7941	4550	1283	1117	6950	68213	15547	10144	93904	103713	1.2	2.9	4.7
Graz	7839	5250	749	677	6676	105698	9112	5709	120519	74916	2.2	4.5	5.1
Herstmonceux	7840	3953	771	1297	6021	64627	9428	4893	78948	60825	7.0	8.8	11.3
Monument_Peak	7110	3248	638	535	4421	59533	7544	3814	70891	51138	5.5	9.4	10.8
Wettzell	8834	2807	548	373	3728	40791	5092	2056	47939	33499	5.2	14.8	19.9
San_Juan	7406	2329	469	638	3436	36078	5430	4997	46505	46450	6.0	9.5	9.3
Potsdam_3	7841	2877	445	107	3429	60667	4877	929	66473	30278	11.2	14.8	18.3
Shanghai_2	7821	2161	325	461	2947	22048	1906	2898	26852	24830	5.8	11.2	11.5
Grasse_MEO	7845	1422	624	834	2880	46541	6819	3961	57321	45502	5.9	13.7	13.5
San_Fernando	7824	2326	250	40	2616	29240	1217	146	30603	11960	6.3	12.3	18.4
Concepcion_847	7405	1447	519	126	2092	20793	7514	878	29185	26604	6.2	16.9	19.4
Concepcion	7405	25			25	143			143	62	3.9
McDonald	7080	1217	381	231	1829	13022	2958	856	16836	14329	9.6	11.7	12.5
Katzively	1893	1388	183	163	1734	20393	1383	1279	23055	15297	33.5	47.1	36.8
Haleakala	7119	1323	348		1671	21083	3939		25022	14334	4.2	12.4	12.8
Riga	1884	1447	119	4	1570	27087	1305	32	28424	9774	8.3	11.9	14.0
Simosato	7838	1056	392	50	1498	18660	5445	373	24478	19113	7.1	9.2	12.5
Simeiz	1873	1154	310	7	1471	15059	2545	39	17643	10112		43.4	43.8
Arequipa	7403	1236	77		1313	14321	572		14893	5674	7.7	12.3
Hartebeesthoek	7501	947	179	92	1218	13825	2105	676	16606	11900	7.7	12.5	13.4
Greenbelt	7105	857	89	125	1071	18044	782	827	19653	10595	5.6	7.5	8.2
Koganei	7308	691	203	165	1059	15848	3308	1729	20885	20135	8.4	11.0	14.1
Papeete	7124	617	152	3	772	10618	2019	13	12650	7330	11.1	13.4	13.9
Kiev	1824	619	94	48	761	4640	405	140	5185	2894	13.4	22.8	26.0
Altay	1879	207	191	321	719	2368	1343	1490	5201	11008			30.4
Riyadh	7832	559	103	22	684	5792	632	120	6544	3673
Beijing	7249	536	63	19	618	6896	475	140	7511	3708	6.0	11.5	16.6
Tanegashima	7358	415	97	74	586	6060	1117	423	7600	6153	3.9	5.3	5.5
Komsomolsk	1868	69	120	197	386	505	766	907	2178	6312			36.0
Koganei	7328	108	33		141	1570	368		1938	1211	18.9	22.5	24.6

 

 

Below are the detailed descriptions of each column in Table 1 L:

• the first column, L1, is the station location name.
• the second column, L2, is the monument marker number.
• the third column, L3, is the number of nights during the past 12 months in which there were Lunar ranging measurements
• the fourth column, L4, is the number of Lunar Laser Ranging normal points during the past 12 months
• the fifth column, L5, is the number of Lunar Laser Ranging normal points during the past 3 months
• the sixth column, L6, is the average Lunar Laser Ranging normal points rms 3 months in mm

 

Table 1 L

Site Information		Data Information
Column L1	L2	L3	L4	L5	L6
Location	Station Number	num nights tracking last 12 mon	num npt last 12 mon	num npts last 3 mon	ave npt rms last 3 mon
Grasse_MEO	7845	9	50	46	35.1
McDonald	7080	31	47	14	53.0
Matera_MLRO	7941	3	6	6	46.0

 

 

Below are the detailed descriptions of each column in Table 2:

• the first column is the station location name.
• the second column is the monument marker number.
• following columns are in grouped by analysis center with four columns for each
  • the first AC column is the average LAGEOS normal point RMS, in millimeters, during the last quarter
  • the second AC column is the measure of short term bias stability, in millimeters, during the last quarter. The short term stability is computed as the standard deviation about the mean of the pass-by-pass range biases (minimum number of passes in quarter is 10)
  • the third AC column is the measure of long term bias stability, in millimeters, during the past year. The long term stability is the standard deviation of the monthly range bias estimates. A station must have tracked LAGEOS (1,2) in at least 8 of the last 12 months in order to compute this metric.
  • the fourth AC column is the percentage of LAGEOS normal points that were accepted in the analysis.

The first entry in each table is for the performance baseline goal.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total data volume.

 

Table 2

Site Information		DGFI Orbital Analysis				Hitotsubashi Univ. Orbital Analysis				JCET Orbital Analysis				MCC Orbital Analysis				SHAO Orbital Analysis
Station Location	Station Number	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP
Baseline		10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95
Yarragadee	7090	3.5	16.8	2.8	100.0	2.1	11.1	2.5	100.0	5.1	35.6	3.3	99.4	2.5	13.3	2.1	98.3	1.8	10.3	3.4	96.5
Zimmerwald_532	7810	2.5	13.0	2.8	100.0	1.4	7.7	1.8	100.0	3.8	27.0	3.7	99.5	2.7	9.3	2.8	99.0	1.4	8.1	2.8	96.1
Mount_Stromlo_2	7825	5.5	16.8	3.5	100.0	4.4	11.0	3.2	100.0	5.6	32.1	4.3	98.3	4.0	10.1	2.8	95.2	3.3	11.2	3.7	94.9
Changchun	7237	6.9	27.8	6.7	97.0	4.1	28.4	6.2	97.1	5.8	37.9	4.9	88.0	4.7	28.5	8.2	94.3
Matera_MLRO	7941	2.7	13.1	2.7	100.0	1.9	8.6	3.6	99.9	3.7	30.8	4.8	99.7	2.3	15.8	4.1	99.2	2.2	33.2	5.5	98.1
Graz	7839	2.3	10.8	3.2	100.0	1.1	9.2	2.5	100.0	2.6	27.3	21.7	99.2	1.8	9.0	2.6	98.2	1.3	7.4	3.9	96.2
Herstmonceux	7840	3.1	10.5	2.8	100.0	1.9	6.5	2.2	100.0	4.5	26.5	3.7	99.6	2.7	8.6	2.5	98.7	2.0	6.6	2.1	93.7
Monument_Peak	7110	3.6	21.4	4.1	99.9	1.9	13.5	3.1	99.9	5.6	36.2	5.2	98.0	2.2	17.1	2.9	98.8	2.0	13.8	4.5	98.6
Wettzell	8834	3.5	15.4	11.2	100.0	2.4	12.5	10.9	100.0	4.1	26.6	8.2	99.6	2.7	11.1	10.2	97.2	1.8	11.4		93.5
San_Juan	7406	6.7	34.2	32.6	99.5	3.4	28.6	29.0	99.6	8.2	41.2	27.2	84.8	5.4	16.5	5.3	97.3	4.3	29.5		97.2
Potsdam_3	7841	4.9	11.2	9.6	99.2	3.0	10.1	7.2	99.6	5.1	20.7	8.8	97.0	3.2	10.5	7.0	94.4
Shanghai_2	7821													6.3	27.4	4.5	100.0
Grasse_MEO	7845	4.0	13.1	6.0	100.0	2.4	14.3	6.6	100.0	4.2	26.4	5.8	99.4	2.7	11.3	5.5	97.2	2.3	14.9	5.5	98.3
Concepcion_847	7405	4.8	31.7	8.8	99.4	2.5	24.5	4.1	100.0	6.6	35.8	11.7	96.0	4.6	41.4	19.0	99.7
McDonald	7080	4.1	19.8	5.9	99.5	3.0	12.9	3.7	100.0	7.1	36.7	5.1	98.1	3.8	20.0	5.6	95.4	2.9	12.4	3.8	99.3
Haleakala	7119	7.1	24.7	8.6	99.3	3.9	15.7	4.9	99.7	7.1	31.4	9.5	96.8	5.5	18.9	8.1	96.9
Riga	1884	11.1	50.9	52.5	100.0	10.2	46.9	52.0	100.0
Simosato	7838	6.7	22.8	16.4	99.6	4.0	17.1	16.9	99.4	8.6	28.6	14.8	95.1	5.5	17.1	20.2	98.3
Hartebeesthoek	7501	4.1	27.0		100.0	2.0	20.2		100.0	5.8	30.1		100.0	2.7	21.4		97.2
Greenbelt	7105	4.2	15.8		99.5	2.6	12.8		100.0	6.7	34.5		99.6	3.3	13.9		97.0
Koganei	7308	4.8	22.1		99.8	3.8	16.1	7.0	99.8	7.0	28.9	9.9	99.1	5.4	26.5	6.1	97.8
Papeete	7124	3.3	16.9	6.0	100.0	2.1	14.2	5.3	100.0	4.7	34.7	14.1	100.0	2.8	19.6	5.2	100.0
Altay	1879	7.9	31.2	19.2	94.3	5.9	47.9	26.7	100.0	8.3	32.1	30.7	99.1	5.8	22.1	19.8	94.5
Beijing	7249	8.1	41.0		88.5									12.9	28.0		87.9
Tanegashima	7358													3.4	23.6		100.0
Komsomolsk	1868	11.5	63.0	35.9	98.8									7.3	32.1	20.2	93.6
Koganei	7328	17.5	21.1		99.5	14.5	25.3		98.8	10.3	28.8		84.7	8.7	41.5		82.3